Apple G5 Discs wont insert.

iMac G5 (20-inch iSight) Troubleshooting — Symptom Charts 161
No: Replace the optical drive. Does it burn correctly now?
Yes: Problem solved.
No: Replace the logic board.
Discs won’t insert.
Is there a disc already in the drive? 1.
Yes: Eject the disc before inserting another. Refer to Knowledge Base article 106752,
“Macintosh: How to Eject a Disc When Other Options Do Not Work”. If none of these options
will eject the disc, you may have to disassemble the drive to recover the disc. See Knowledge
Base article 86382 - Macintosh: How to Remove a Stuck Disc From a Slot-Loading Drive.
No: Reseat the optical drive. Perform the “Optical Drive” procedure in Take Apart to reseat the
drive in the mounting aperture and reconnect the optical ex drive cable connector.
After reinstalling the optical drive, can you now insert a disc? 2.
Yes: Issue resolved. Run diagnostics and return the system to the customer.
No: Replace the optical drive ex cable.
Yes: Problem solved. Run diagnostics and trying inserting a disc again.
After replacing the optical drive ex cable, can you insert a disc now? 3.
Yes: Issue resolved. Run diagnostics and return the system to the customer.
No: Replace the optical drive.